#include "state_manager_impl.h"
#include "spdlog/spdlog.h"
#include <fstream>
#include <thread>

StateManagerImpl::StateManagerImpl(const std::string& savePath)
    : savePath_(savePath) {}

void StateManagerImpl::saveState() {
    if (isSaving_.exchange(true)) {
        SPDLOG_WARN("State save already in progress");
        return;
    }

    std::thread([this]() {
        std::lock_guard<std::mutex> lock(mutex_);
        
        try {
            // TODO: 实现实际的状态序列化逻辑
            std::ofstream out(savePath_, std::ios::binary);
            if (!out) {
                throw std::runtime_error("Failed to open state file");
            }

            // 示例序列化代码
            // serializeState(out);
            
            SPDLOG_INFO("System state saved successfully");
        } catch (const std::exception& e) {
            SPDLOG_ERROR("State save failed: {}", e.what());
        }

        isSaving_.store(false);
    }).detach();
}

bool StateManagerImpl::restoreState() {
    std::lock_guard<std::mutex> lock(mutex_);
    
    try {
        std::ifstream in(savePath_, std::ios::binary);
        if (!in) {
            SPDLOG_WARN("No previous state found");
            return false;
        }

        // TODO: 实现实际的状态反序列化逻辑
        // deserializeState(in);
        
        SPDLOG_INFO("System state restored successfully");
        return true;
    } catch (const std::exception& e) {
        SPDLOG_ERROR("State restore failed: {}", e.what());
        return false;
    }
}